The Báb left Shiraz for Mecca and Medina in October 1844
According to Hájí Mu’inu’s-Saltanih’s narrative (p. 72), the
Báb set out on His pilgrimage to Mecca and Medina in the month of Shavval, 1260
A.H. (Oct., 1844 A.D.).
(Footnotes to chapter 7 provided by Shoghi Effendi)